This is a kind of unilateral obesity, which refers to the gradual hypertrophy and asymmetry of the body's limbs and body. Mainly for infants and young children, the progress is slow, the development stops in youth, and the illness of adults is rare. Centrifugal hypertrophy mainly invades soft tissues, which is characterized by thickening, pigmentation, increased hair, increased sweating, telangiectasia and skin flushing. Bone hyperplasia and hypertrophy can occur in limbs and trunk, and in severe cases, giant finger, syndactyly, polydactyly, scoliosis, pelvic abnormality and arch deformity can occur. This disease is self-limited and can stop on its own to some extent. There is no effective treatment at present. At the same time, patients with congenital eccentric hypertrophy have an increased risk of abdominal tumors. Pay attention to regular abdominal palpation and ultrasound examination.